Concrete-mold.



PATENTED JAN. 30, 1906. F. M. EMERSON.

CONCRETE MOLD.

APPLICATION FILED BEPT.8. 1905.

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PATENTED JAN. 30, 1906.

' r. M. EMERSON.

CONCRETE MOLD.

APPLIQLTIOX TILED 8EPT.8 1905.

' 2 snare-sum 2 witnesses:

PATENT OFFICE.

FREDERIC MORTIMER EM PERSON,

OF BROOKLINE. MASSAUHUS )TTS.

CONCRETE-MOLD- Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed September 8, 1905. Serial No. 877,491.

To all whom it nmy concern:

Be it known thatLFREnnmc Mon'rnina Emtznsox, of Brookline, county of Norfolk, State of .tlassachusetts, have invented an Improvement in Concrete-Molds, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to a mold which is especially adapted to be employed in building concrete walls; and it has for its object to produce a mold which is adapted to be filled while on the foundation and to hold the concrete until it becomes hardened in the desired form and which is adapted to be readily removed without injury to the molded blocks and be used in a similar way to form another section of the wall. I accomplish this object by the means shown in the accompanying drawings, in which Figures 1, 2, and 3 are respectively side, plan, and end views of my improved mold. Fig. 4 is an end vied of the mold in the open position. Fig. 5- is a longitudinal sectional view showing a method of using the mold.

As shown in the drawings, the mold comprises a pair of side plates (1 b, which are normally held in parallelism at a suitable distance apart. Said plates are preferably provided with suitable transverse reinforcingribs u 6' on their outer sides, and rigidly connected to said ribs, respectively, are a series of bars or arms J, said arms preferably being made of rigid T-iron and extending vertically above the upper edges of said plates to a suitable distance, as shown, and being arranged in pairs, one directly opposite the other. A pair of locking-levers ef are provided for each pair of oppositely-disposed connected at one end to the upper end of said arms and the lovers of each pair extending in opposite directions over and past the arm opposite thereto, so that the upper end of each arm will act as a stop to hold the opposite lever in an approximately horizontal position. each pair of levers being pivotally connected to each other by means of pivotholts g. said pivots being located at points approximately in the vertical plane midway between the adjacent faces of the plates u L.

Longitudinally-extcnding IOdS/l pass through a each lever adjacent their ends, and similar rods 1 pass through the ends of levers f. so

that each setof levers may be moved in unison. Links k are pivotally connected at each end by pivots k to corresponding brackets m. 11, mounted on the upper edges of the side plates all, said brackets extending upwardly to such an extent that the pivotal points are a short distance above said upper edges. as shown. The length of said links is such that when the levers efare resting on their stops in a horizontal position and the side plates are held parallel the center of each pivot y will be in the straight or dead-center line between the pivots of the particular pair of levers which itconnects. A pair of projecting lugs p q are formed integral with brackets m n or are otherwise secured to each end of the side plates at the upper edges thereof, said lugs projecting toward each other beyond the inner faces of said plates. A pair of heads 1* are provided, one for each end of the mold, said heads being adapted to tit hetween said plates when they are in the position of Fig. 1. Holes are bored through the side plates a 11 adjacent their ends. and pins .r are provided which are adapted to pass t h rough said holes to act as supports for said heads when they are in position between the side plates. A brace or prop r' is preferably provided on the outer side of each head, so as to hold the same in a vertical position when otherwise unsupported, and a vertical rib r is preferably provided on the inner side of each head. The inner faces of the plates may be lined with sheet metal to provide a smooth finish, and they are preferably provided with an inwardly-beveled portion at their upper and lower edges, so that the corners of the courses will be beveled when finished. Each plate is provided with a handle a Fat each end, which 1 may be conveniently employed in moving the arms v :1. each of said levers being pivotally mold.

When the mold is to be placed in position. the heads are first set on the that foundation at a suitable distance apart. Then the free ends 1 of the levers are swung upwardly, so that the upper ends of the arms (-11 will he swung toward each other, and the plates will be swung apart about the pivots l" as centers. The parts are held in this position by means of a hook w or other suitable locking device, said hook i being shown as pivoted to rod 1: and adapted to engage the opposite rod '7'. The plates are then lowered at opposite sides of the heads 1 until the lugs p q engage the upper ends of l the heads, so that the latter support the side plates. The hook w is then released, pormitting the plates to swing together against the side edges of the heads. the heads preferably being blocked up slightly, so that they hold 1 the plates high enough to prevent the lower edges of the plates fromdragging on the foundation as they are swung against the heads. When the plates have been moved against the edges of the heads, the leverse and f will have swung downwardly, so that their connectingpivots y will be in the dead-center line, and thearmse 1" will actto hold and lock the plates firmly in this position. The mold thus formed is then filled with the concrete, which is allowed to stand until it becomes hardened or stiifened,

and then the levers and fare again lifted,-

causing the plates 4 and b to be swung away from the sides of the molded block to such an extentthat they may then be readily lifted out of contac therewith without in any way injuring it. he fact that the pivots X" are located above the upper edges of the plates enables the latter to be swung free of the blocks throughout the entire width thereof. heads may then be easily removed.

l l l i and correspomling hole k in the links I- t'or the pivots A", so that the plates may he held closer together. Heads of corresponding widths will in such case he employed.

It will be apparent lhat the principal force which will be exerted on the connections between the arms wand 11 and the plates 11 b will be adjacent the upper edges of the latter, so that I provide additional securing means, as

1 clips y, at this point between said arms and j disposed locking-levers each pivotally con- The In practi ce a suitable number of the molds are provided and a series of blocks of concrete are 1 formed therewith at distances apart which are somewhat less than the length of the mold. Then when the blocks have become hardened so that the molds may be removed the molds are set betweeji ously been lai so that the side plates hear nected at one end to one of said arms and to each other at an intermediate point, substantially as described.

'2. A concrete-mold comprising a pair of side plates pivotaliy connected adjacent their upper edges to swing to and from each other,

arms rigidly connected to said plates and exthe blocks, which have previagainst the sides of said blocks at their ends.

(See Fig. 5.} placed in position boards are placed on the upper surfaces of the previously-molded blocks, so that when the lugs hear on them in Before the molds are again i placing the mold in position and in subsequeutly supporting it when it is being filled the blocks will not be injured if they have not i become thoroughly hardened. The spaces het-ween the blocks are then filled with the concrete and allowed to harden. The side plates are of sulficient length to overlap the adjacent ends of the previously-laid blocks, and as the heads will not be used in the second operation concrete and a tenon will be formed which will the groove previously formed by the rib r on the inner face of the head, thus maktending upwardly therefrom, two oppositelydisposed locking-levers each pivot-ally connected at one end to one of said arms and to each other at a point approximately midway between said plates, substantially as described.

3. A concrete-mold comprising a pair of side plates, a link pivotally connected at each end to said plates to permit said plates to be swung to and from each other, rigid arms connected to said plates and extending upwardly therefrom. and two locking-levers, each pivotally connected at one end to one of said arms and pivotally connected to each other midway between said arms, substantially as described. 4. A concrete-bold comprising a pair of side plates pivotally connected at their upper I edges to swing to and from each other, a pair f of heads adapted to be held between said plates. the concrete will adhere to the previously-laid projections on said plates adapted to engage I the upper ends of said heads. and means for log a more rigid connection thcrebetween. Vt hen the side plates are again removed, a continuous course will have been produced. Succeeding courses will then he laid on the lirst con rse in a manner which will be obvious, care being taken to alternate the hlochsso that the middle of one block will hoover the joint between two blocks below. in this manner the walls may be built to any desired height.

As shown, the apparatus is adjusted for a locking said plates against the side edges of said heads, substantially as described.

A concrete-mold comprising a pair of side plates pivotally connected adjacent their upper edges to swing to and from each other, arms rigidly connected to said plates and extending upwardly therefrom, two oppositelydisposcd loekinglevers each pivotally connected at one end to one of said arms and to a each other at an intermediate point. and a stop wall of the maximum thickness; butin case a i wall of less thickness is desired I provide a series of holes y in the leVQIS f lbllillf pivot for supporting said levers in a position in which the pivotal connection therehetwcen is held at the center line of the pi rots of said levers, substantially as described.

6. A concrete-mold comprising a pair of side plates pivotally connected adjacent their l In testimonywhereoflhavesigned myname upper edges to swing to and from each other, I to this specification in the presence of two sub- I means for locking said plates in a predeterscribing witnesses.

mined position, and supporting-lugs connectr ed to said plates at their upper edges and ad- B MORHMER EMERSON jacent each end. and extending toward each Witnesses:

other beyond the inner faces of said plates, L. H. HARRIMAN,

substantially as described. CYNTHIA DOYLE. 

